OK, let's work through this together. We're starting with 1000 and we're going to multiply it by 8, which means we add 1000 to itself 8 times.
Step 1: 0 + 1000 = 1000
Step 2: 1000 + 1000 = 2000
Step 3: 2000 + 1000 = 3000
Step 4: 3000 + 1000 = 4000
Step 5: 4000 + 1000 = 5000
Step 6: 5000 + 1000 = 6000
Step 7: 6000 + 1000 = 7000
Step 8: 7000 + 1000 = 8000

So, 1000*8 = 8000